A new species, lndoquedius qiuae sp. nov. in the genus lndoquedius Blackwelder, is described and illustrated from Sichuan, China. The species is similar to I. nonparallelus Zhao ＆ Zhou from Yunnan Province, but diffe...A new species, lndoquedius qiuae sp. nov. in the genus lndoquedius Blackwelder, is described and illustrated from Sichuan, China. The species is similar to I. nonparallelus Zhao ＆ Zhou from Yunnan Province, but differs in the aedeagus more narrowed at apical part of median lobe, paramere constricted drastically at the bottom, being more narrow and straight throughout whole length, sensory peg setae on underside less numerous, and deeper middle emargination of male sternite 9. It was found in Heizhugou Forest Park in Sichuan, China.展开更多
Staphylinoidea(Insecta:Coleoptera)is one of the most species-rich groups in animals,but its huge diversity can hardly be explained by the popular hypothesis(co-radiation with angiosperms)that applies to phytophagous b...Staphylinoidea(Insecta:Coleoptera)is one of the most species-rich groups in animals,but its huge diversity can hardly be explained by the popular hypothesis(co-radiation with angiosperms)that applies to phytophagous beetles.We estimated the evolutionary mode of staphylinoid beetles and investigated the relationship between the evolutionary mode and palaeoclimate change,and thus the factors underlying the current biodiversity pattern of staphylinoid beetles.Our results demonstrate that staphylinoid beetles originated at around the Triassic-Jurassic bound and the current higher level clades underwent rapid evolution(indicated by increased diversification rate and decreased body size disparity)in the Jurassic and in the Cenozoic,both with low-energy climate,and they evolved much slower during the Cretaceous with high-energy climate.Climate factors,especially low 02 and high C02,promoted the diversification rate and among-clade body size disparification in the Jurassic.In the Cenozoic,however,climate factors had negative associations with diversification rate but little with body size disparification.Our present study does not support the explosion of staphylinoid beetles as a direct outcome of the Cretaceous Terrestrial Revolution(KTR).We suppose that occupying and diversifying in refuge niches associated with litter may elucidate rapid radiations of staphylinoid beetles in low-energy conditions.展开更多
文摘A new species, lndoquedius qiuae sp. nov. in the genus lndoquedius Blackwelder, is described and illustrated from Sichuan, China. The species is similar to I. nonparallelus Zhao ＆ Zhou from Yunnan Province, but differs in the aedeagus more narrowed at apical part of median lobe, paramere constricted drastically at the bottom, being more narrow and straight throughout whole length, sensory peg setae on underside less numerous, and deeper middle emargination of male sternite 9. It was found in Heizhugou Forest Park in Sichuan, China.
基金the National Natural Science Foundation of China(NSFC-31501883 to L.L.,NSFC-31472036 to H.-Z.Z.)the Youth Top-notch Talent Support Program of Hebei Province to L.L.(BJ2018057)+2 种基金the Biodiversity Survey and Assessment Project of the Ministry of Ecology and Environment,China to H.-Z.Z.(2019H J2096001006)a grant from the Key Laboratory of the Zoological Systematics and Evolution of the Chinese Academy of Sciences to H.-Z.Z(Y 229Y X5105)a grant from the Strategic Priority Research Program of the Chinese Academy of Sciences to CY.C.(XD B26000000).
文摘Staphylinoidea(Insecta:Coleoptera)is one of the most species-rich groups in animals,but its huge diversity can hardly be explained by the popular hypothesis(co-radiation with angiosperms)that applies to phytophagous beetles.We estimated the evolutionary mode of staphylinoid beetles and investigated the relationship between the evolutionary mode and palaeoclimate change,and thus the factors underlying the current biodiversity pattern of staphylinoid beetles.Our results demonstrate that staphylinoid beetles originated at around the Triassic-Jurassic bound and the current higher level clades underwent rapid evolution(indicated by increased diversification rate and decreased body size disparity)in the Jurassic and in the Cenozoic,both with low-energy climate,and they evolved much slower during the Cretaceous with high-energy climate.Climate factors,especially low 02 and high C02,promoted the diversification rate and among-clade body size disparification in the Jurassic.In the Cenozoic,however,climate factors had negative associations with diversification rate but little with body size disparification.Our present study does not support the explosion of staphylinoid beetles as a direct outcome of the Cretaceous Terrestrial Revolution(KTR).We suppose that occupying and diversifying in refuge niches associated with litter may elucidate rapid radiations of staphylinoid beetles in low-energy conditions.
